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Inside Relational Databases with Examples in Access (Paperback, New edition)
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Inside Relational Databases with Examples in Access (Paperback, New edition)
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Contents Should we tell you the whole story? Of course, there is an
inevitable tension in trying to work like this. For example, in
Chapter 16 we talk about referential integrity. There are -
sentially six different flavors of referential integrity but Access
only s- ports four of them (they are the most important ones
however, so you aren't missing out on too much). The problem is
this. Should we tell you about the other two? If we do, as an
Access user you have every right to be annoyed that we are telling
you about a feature you can't use. On the other hand, the six
different types that we describe are part of the re- tional world
and this book is about that world - we are not trying to teach you
how to use Access, we are simply using Access to illustrate the
relational model. Ultimately we decided to risk your ire and to
describe all of the features of the relational model as we see it,
even if Access doesn't support all of them. One advantage of this
approach is that if you need to use a different database engine you
will almost certainly find the extra information useful.
Incidentally, this is not meant to imply that Access is somehow
lacking as a relational database engine. The reason we chose it for
the first book is that it is such a good example of a relational
database tool.
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